Pidgin (formerly Gaim) is an instant messaging client for a variety of instant messaging protocols. It is based on the libpurple instant messaging library.
Multiple vulnerabilities have been discovered in Pidgin and the libpurple library:
A remote attacker could send specially crafted messages or files using the MSN protocol which could result in the execution of arbitrary code or crash Pidgin. NOTE: Successful exploitation might require the victim's interaction. Furthermore, an attacker could conduct man-in-the-middle attacks to obtain sensitive information using bad certificates and cause memory and disk resources to exhaust.
There is no known workaround at this time.
All Pidgin users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-im/pidgin-2.5.1"